Question with Solaris Crash Analysis Tool with Solaris 9 Post: 302666333

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Operating Systems Solaris Question with Solaris Crash Analysis Tool with Solaris 9 Post 302666333 by vmcore on Wednesday 4th of July 2012 07:13:29 AM

07-04-2012

Registered User

Hello, any results with "*" are what tool is considering worth investigating. In time you will learn that some are more important than other, but you starts with all of those.

I would first go with items that are kernel related.

50* threads sleeping on a semaphore (49 user, 1 kernel)

CAT> tlist sobj sema
review this output, or post for more help.

next:
CAT>tlist biowait
look for long times spent in biowait, could be an issue.

Let us know if you need more help, we can do full analysis.

vmcore

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LEARN ABOUT V7

biowait

biowait(9F)						   Kernel Functions for Drivers 					       biowait(9F)

NAME

       biowait - suspend processes pending completion of block I/O

SYNOPSIS

       #include <sys/types.h>
       #include <sys/buf.h>

       int biowait(struct buf *bp);

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI).

PARAMETERS

       bp	Pointer to the buf structure describing the transfer.

DESCRIPTION

       Drivers	allocating  their  own	buf structures with  getrbuf(9F) can use the biowait() function to suspend the current thread and wait for
       completion of  the transfer.

       Drivers	must call biodone(9F) when the transfer is complete to notify the thread blocked by biowait(). biodone() is usually called in  the
       interrupt routine.

RETURN VALUES

       0	       Upon success

       non-zero        Upon I/O failure.  biowait() calls geterror(9F) to retrieve the error number which it returns.

CONTEXT

       biowait() can be called from user context only.

SEE ALSO

       biodone(9F), geterror(9F), getrbuf(9F), buf(9S)

       Writing Device Drivers

SunOS 5.10							    11 Apr 1991 						       biowait(9F)